Warm Deck Roof Detail

In a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building.

Warm deck roof detail.

There are three recognised designs of flat roof construction. There is a likelihood that this practice could contribute to a condensation risk and therefore it would be strongly recommended to have a condensation risk. This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up. Types of warm deck roof.

The insulation is immediately below the waterproofing layer. It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. In case of warm roofs they have an insulation above the roof deck in this way it keeps. A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building.

Therefore water vapour which enters the roof structure from the room below will not have a cold surface on which to condense. A warm deck roof is where the insulation is placed on top of the rafters joists and the roof covering is then placed over the insulation. The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible. The sandwich warm deck roof is the most common type of flat roof.

A warm deck also provides added protection from the dangers of condensation as the structure is kept warm at a temperature above dewpoint by the insulation above it. So called because the insulating layer is located above the roof rafters and between the structural supports a warm deck roof results in a temperature for the roof and loft area that is consistent with the rest of the. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. There are two forms of warm deck roof.

Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in. Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t. The vapour control layer is above the decking but below the insulation. This usually keeps the deck warm.

It is not unusual for designs to keep roof levels to a minimum and there is a trend when designing a warm roof to include some of the insulation below the structural deck as well as above. The insulation can be adhered mechanically fixed or loose laid. No ventilation is required for these types of roofs.